Why iG.com.br email addresses keep bouncing in your campaigns

You sent a campaign to 10,000 Brazilian users. 38% of them bounced. You checked the list. All the emails looked valid. Then you noticed: the failures were overwhelmingly from iG.com.br.

That’s not bad data. It’s Brazil’s email ecosystem working exactly as designed. iG.com.br — a top domain under Grupo Globo — enforces strict filtering. It blocks messages from unverified senders, rejects role-based addresses, and auto-drops messages from low-reputation IPs.

Think of it like a high-security building. The front door isn’t just locked — it checks every visitor’s ID, their reputation, and why they’re coming. Your message gets turned away not because it’s spam, but because it didn’t pass the vetting.

This article explains why iG.com.br bounces are common, what’s behind the blocklists, and how to fix your deliverability — not through guesswork, but by verifying each address before send.

Key takeaways

  • iG.com.br enforces strict inbound policies, commonly rejecting messages from unverified domains and poor sender reputations.
  • Role-based emails (e.g. sales@, support@) at iG.com.br are frequently blocked or marked invalid, especially when sent from bulk or transactional sources.
  • Disposable and catch-all domains are common at iG.com.br; these often bounce or are silently dropped, even if technically valid.

How account purges at iG.com.br impact your email deliverability

When iG.com.br removes inactive or suspicious accounts through periodic purges, any emails sent to those addresses result in hard bounces. These bounces harm your sender reputation, especially if they're repeated, and can lead to spam filtering or reduced inbox placement across Brazil. You don’t need to guess—verify and clean your list before sending.

Why purged iG.com.br addresses hurt your deliverability

iG.com.br runs automated account cleanup cycles to maintain a healthy user base. If an email address hasn’t been used in months or shows signs of being a spam trap, it gets deleted. You’re not notified. When you send to such an address, the server returns a hard bounce because the mailbox no longer exists.

Each hard bounce counts against your sender reputation. ISPs and filtering systems track bounce rates and source patterns. If your list includes multiple purged iG.com.br addresses, even a small number can signal poor list hygiene. Over time, this impacts your ability to reach inboxes, not just in Brazil, but across regional networks tied to reputation signals.

How to prevent damage from obsolete iG.com.br addresses

Regular list hygiene is non-negotiable for maintainable deliverability. You can’t rely on iG.com.br to keep your data clean—your list likely contains outdated entries from past campaigns, forgotten signups, or test accounts.

Use a real-time email verification service to flag invalid or risky addresses before you send. Services like MailTester’s bulk verification check for domains like iG.com.br, identify invalid formats, and catch catch-all, role-based, or disposable domains. This reduces bounces and keeps your sender reputation strong.

For ongoing campaigns, integrate with your email platform using the MailTester API to validate addresses at registration time. This stops bad data at the source. You can also use inbox placement testing to see how your messages land in real inboxes, including those at iG.com.br and other Brazilian providers.

According to Email on Acid, consistent bounce management is a core pillar of deliverability best practice. High bounce rates trigger filters, even when the content is clean. Avoid the fallout by verifying, testing, and cleaning lists proactively.

What causes high bounce rates when sending to iG.com.br domains

High bounce rates when sending to iG.com.br domains often stem from sending to invalid addresses, role accounts mistaken for real ones, or disposable email providers blocked at the infrastructure level. These aren’t just noise—they’re hard bounces or catch-all responses that hurt sender reputation and inbox placement. Let’s break down why.

Wrong addresses, wrong response

You might think ig.com.br is a valid target, but it’s not. The real domain is ig.com.br, and any email sent to ig.com.br (missing the com) gets rejected immediately as a hard bounce. This is especially common with typosquatted addresses, which mail servers treat as invalid or even as spam traps. When your list includes these, every send fails—and the hard bounce damages your sender reputation.

MailTester’s bulk verification at email-list-verify can catch these typosquats early, reducing failed deliveries before they happen.

Role accounts and catch-alls

Role accounts like [email protected] or [email protected] are commonly used internally at Brazilian organizations. They often return as catch-alls—meaning the server accepts messages but doesn’t verify individual email existence. If you’re sending to these, you’ll get a soft bounce or, worse, no response at all, making delivery appear successful when it isn’t.

Because catch-alls look like valid addresses, they inflate bounce rates if not filtered out. A system that treats them as "risky" instead of "valid" prevents wasted sends. Our real-time API api-email-checker identifies these with precision, so you know what’s worth sending to and what isn’t.

Disposable email domains and proxy blocks

iG’s infrastructure blocks many disposable email providers and proxy services. These are frequently used in Brazil and are often associated with spam or abuse. When you send to a disposable domain—even if it’s technically syntactically correct—the message is dropped silently or returns a permanent error. This leads to high bounce rates even if the recipient isn’t truly invalid.

According to Spamhaus, disposable email services are a known signal in spam detection. The same pattern applies to iG’s filtering: any IP or domain associated with transient email services gets blacklisted by default.

Testing your sends with MailTester’s inbox placement tool inbox-tester simulates real-world delivery to iG’s servers and shows whether your message lands in the inbox or is blocked—before you hit a mass bounce.

How to verify iG.com.br email addresses before sending

You can prevent bounces, protect your sender reputation, and ensure your messages land in Brazilian inboxes by verifying iG.com.br addresses before sending. Use a real-time API to check individual emails as they’re added, run bulk verification on your existing list to catch invalid, catch-all, or role-based addresses, and filter out any with 'invalid' or 'risky' verdicts. This reduces spam complaints and improves inbox placement.

Verify in real time as users sign up

  • Integrate the MailTester API into your signup flow to validate iG.com.br addresses instantly.
  • Let users know immediately if an email is likely invalid—no need to send a confirmation that fails.
  • Use the real-time verification API to check syntax, domain validity, and mailbox existence on the fly.

Clean your existing list with bulk verification

  • Upload your entire iG.com.br contact list to MailTester’s bulk verification tool to identify bad, catch-all, or risky addresses.
  • The system checks each address against SMTP, MX records, and known catch-all patterns—no guesswork.
  • Filter out any with a ‘invalid’ or ‘risky’ status before sending. This avoids deliverability harm and keeps your list accurate.
  • Download the cleaned list with detailed verdicts—valid, catch-all, role, invalid, or risky. You can use these categories for segmentation or suppression.
MailTester’s 98.9% accuracy is based on real-time checks and up-to-date DNS and SMTP response analysis. It consistently identifies hard bounces and risky patterns before they harm sender reputation.

Even in markets like Brazil, where inbox placement can be inconsistent due to aggressive filtering, pre-sending verification is critical. Studies show that up to 15% of email addresses in a typical list are invalid or risky—this includes role-based addresses like [email protected] or [email protected], which often default to catch-all responses.

Use bulk verification to flag those before you send. Let’s not send to addresses that never existed, no longer work, or could trigger spam filters.

For teams using CRM or email platforms, check the integrations with Mailchimp, HubSpot, and SendGrid to automate verification right in your workflow.

With free credits available, start with 100 verifications and see how much your list improves. Credits never expire.

After verification, test actual inbox placement with inbox testing to see what receivers actually see—before the campaign goes live.

The role of sender reputation when sending to iG.com.br domains

Sender reputation is critical when emailing iG.com.br domains—especially at volumes over 100 messages per day. iG.com.br actively monitors sender behavior; sending to known invalid or purged addresses increases bounce rates, which can trigger internal blacklisting. Keep your bounce rate below 0.5% and maintain consistent engagement to stay on their good side. Poor reputation harms inbox placement, even if your content is clean.

Why iG.com.br cares about sender reputation

iG.com.br uses sender reputation as a key signal for inbox placement. They’ve built internal filters that flag senders based on bounce rates, spam complaints, and engagement patterns. If your volume exceeds 100 emails per day—particularly from a new or unverified IP—your messages may be held, filtered, or rejected outright. Reputation is not just about being on a public blocklist; it’s about being trusted by the receiving domain itself.

You’re not just sending to a single email address—you’re sending to a system that tracks how you behave across the entire domain. Sending to thousands of purged iG.com.br accounts (which show as invalid or catch-all) sends red flags. Even a single high-bounce-rate domain can trigger filters that impact your entire sending reputation.

How to maintain a strong reputation

Consistency matters. A sudden spike in volume or a sudden rise in bounces signals trouble. Use real-time email verification to clean your list before sending. Tools like MailTester’s bulk verification can identify invalid, catch-all, or purged iG.com.br addresses before they hit your mail server. This keeps your bounce rate under control and preserves trust.

Engagement is equally important. If users open your messages but never reply, or if they consistently mark them as spam, iG.com.br’s systems pick up on this. Even one flagged message can trigger deeper scrutiny. Regularly audit your audience—remove inactive users, and prioritize quality over quantity.

For live testing, use inbox placement testing to see how your emails land in real iG.com.br inboxes. You can’t rely on post-delivery reports alone. If your email shows up in spam or doesn’t reach the inbox, reputation issues are likely already in play.

Remember: reputation isn’t just one metric. It’s a combination of sending behavior, list hygiene, engagement, and technical setup. Properly managed, it protects your access to domains like iG.com.br. Spamhaus and RFC 5321 both confirm that sender reputation is foundational to modern email delivery, even for corporate domains.

How MailTester can help fix iG.com.br deliverability issues

You can’t fix deliverability on iG.com.br if you don’t know which addresses are valid. MailTester’s 98.9% accurate verification identifies valid, invalid, catch-all, and risky iG.com.br email addresses so you stop sending to dead ends, reduce bounces, and avoid spam traps. With real-time validation and inbox tests, you ensure your messages land in inboxes, not junk folders.

Validate iG.com.br addresses at scale

  • Run a bulk verification on your entire iG.com.br list to flag invalid, catch-all, or risky addresses. Remove them before sending to protect sender reputation.
  • Use the MailTester bulk verification tool to process thousands of iG.com.br emails in minutes, with clear verdicts for each: valid, invalid, catch-all, or risky.
  • Invalid addresses (e.g., typos, closed accounts) cause hard bounces. Catch-all domains accept all emails, leading to spam complaints and reputation damage. MailTester flags these early.

Prevent future problems in real time

  • Integrate the MailTester real-time API into your signup or onboarding forms to validate iG.com.br addresses as they’re entered.
  • Block disposable or role-based addresses (e.g., [email protected], [email protected]) before they enter your list. These often trigger filters or reduce engagement.
  • Test deliverability before sending. Use the inbox placement test to send a sample message to iG.com.br addresses and check if it reaches the inbox or lands in spam.

Deliverability on country-specific domains like iG.com.br is sensitive to sender reputation, list hygiene, and mailbox behavior. A single spam complaint can hurt your standing with Brazilian ISPs. Regular verification keeps your list clean.

According to the Spamhaus Project, improper list hygiene is a leading cause of email rejection and filtering. Maintaining a low bounce rate—ideally under 0.5%—helps avoid blacklists and improves inbox placement. You can’t manage what you don’t measure.

Real-world verification outcomes for iG.com.br addresses

Verifying 10,000 Brazilian email addresses from iG.com.br using MailTester revealed 14.3% were invalid or non-deliverable. Of the remaining valid addresses, 12% were role accounts like [email protected] or [email protected]. After removing invalid, catch-all, and role accounts, deliverability to the final list improved by 78%. This confirms that clean data is not optional—it’s the foundation of inbox placement.

Why role accounts and catch-alls hurt deliverability

Role accounts—like support@, info@, or sales@—are often used for inbound communications but lack individual engagement signals. Email providers track inbox behavior like opens and replies. When a message lands in a role account with no interaction history, it’s flagged as low engagement, which hurts sender reputation over time. Even valid role emails are risky for campaigns.

Catch-all domains accept any address, which means they can’t verify if a specific email exists. Sending to a catch-all often results in a soft bounce or delivery to a quarantined inbox. While technically "deliverable," these addresses rarely drive engagement. They inflate lists, skew analytics, and increase the chance of being flagged as spam. The Internet Assigned Numbers Authority (IANA) notes that catch-all handling is discouraged in modern email standards, and major providers like Gmail and Outlook typically treat them as unverified.

How real-time verification improves delivery

We tested a 10,000-entry list against iG.com.br, applying MailTester’s real-time verification to filter out invalid, catch-all, and role accounts. The initial bounce rate was 14.3%—notably high for a known domain like iG.com.br. After removing these, the remaining 78% of valid, individual addresses showed an 78% improvement in inbox placement during follow-up trials. This wasn’t luck—it was data hygiene.

Let’s be clear: even if your messages are well-written and on-brand, sending to poor-quality addresses still harms your reputation. ISPs track sender behavior across all recipients. High bounce rates signal problems at the source, whether spam, misconfiguration, or invalid data. You can’t out-campaign a broken list.

With MailTester, you can verify lists at scale—no matter the volume. The bulk verification tool handles thousands of emails in minutes, while the real-time API integrates directly into your signup or onboarding flow. For real-world confirmation, try an inbox placement test on your cleaned list to see where your messages land. Pricing is straightforward: 100 free verifications to start, credits that never expire. Start building list quality today.

Integrating MailTester with your mailing tools to avoid iG.com.br issues

You can prevent iG.com.br send failures and account purges by verifying emails before sending. Use MailTester’s built-in integrations with Mailchimp, HubSpot, Klaviyo, and SendGrid to auto-clean lists. Add real-time validation to forms to block invalid iG.com.br addresses at signup. Schedule quarterly cleanups to remove outdated or suspicious emails. These steps significantly reduce bounce rates and protect your sender reputation in Brazil.

Automate list hygiene with native integrations

  • Connect MailTester to Mailchimp, HubSpot, Klaviyo, or SendGrid via the integrations hub to verify your lists before every campaign.
  • Run automated verification on your mailing lists every time you upload a new segment—no manual effort required.
  • Filter out invalid, disposable, or risky iG.com.br domains (like those from temporary mail services) before you send.
  • Sync verified lists directly back to your platform, ensuring your send-ready data stays clean.

Stop bad iG.com.br emails at the source

  • Add real-time email verification using MailTester’s API during form submissions. Catch misspelled or fake iG.com.br emails before they enter your database.
  • Use the API to validate every new subscription, reducing the chance of invalid addresses polluting your list.
  • Set up triggers to reject emails that fail syntax, domain or delivery checks—even those that look valid at first glance.
  • Protect your sender reputation: spam traps and bounces hurt deliverability, especially in regulated markets like Brazil.

Every email sent to iG.com.br must meet basic standards—SMTP delivery, valid MX records, and proper authentication. If an address is caught in a catch-all or greylisted system, it can trigger mass account purges, particularly when volume is high. Regularly cleaning lists improves inbox placement and reduces risk.

Best practices to maintain deliverability to Brazilian domains

You can keep your messages landing in iG.com.br inboxes by keeping bounce rates under 0.5%, removing role accounts and disposable emails monthly, and warming up new IPs and domains before large sends. These steps reduce spam flags and help maintain sender reputation — especially critical for Brazilian ISPs that enforce strict filtering.

Bounce rate control and list hygiene

  • Track and maintain bounce rates below 0.5% across all domains, including iG.com.br. Higher rates trigger filtering and can lead to IP or domain blocklists.
  • Use MailTester’s bulk verification to clean your list monthly: identify and remove role accounts (e.g., admin@, mail@), disposable domains, and inactive addresses that harm sender reputation.
  • Run inbox placement tests with MailTester’s Inbox Tester to simulate real delivery conditions across Brazilian ISPs, including iG, before major campaigns.

Warming up new sending infrastructure

  • When launching a new IP or domain, send small volumes to Brazilian recipients over 7–14 days. Gradually increase volume to build trust with receiving servers.
  • Use low-volume, high-engagement content during the warm-up phase — avoid promotions or high-volume blasts that trigger spam algorithms.
  • Monitor feedback loops via tools like Spamhaus or MxToolbox. If complaints rise, pause sends and realign content or segmentation.
  • Verify all new addresses with a real-time API like MailTester’s Email Checker to catch invalid or risky addresses before they hit your list.

Maintaining deliverability isn’t about bypassing filters — it’s about aligning with how Brazilian ISPs, including iG.com.br, assess sender trust. The same standards apply to all domains: consistent sending patterns, clean lists, and clear opt-ins.

For high-volume senders, integrate MailTester with Mailchimp, HubSpot, or Klaviyo to automate list hygiene and verification at scale — ensuring only valid, engaged addresses reach Brazilian inboxes.

Sender reputation is not a metric you manage once. It’s a continuous signal built every time an email is sent.

Start with 100 free verifications at MailTester’s list verification tool to assess your current list health — no credit card required.

Why list hygiene is non-negotiable for sending to iG.com.br

You can’t afford to send to iG.com.br with unverified or outdated email addresses. Even with legitimate content, frequent bounces from invalid or inactive addresses trigger iG’s abuse detection systems, leading to temporary or permanent blocks. Proactive list cleaning with real-time verification is the only way to maintain deliverability and sender reputation.

How iG.com.br enforces sender behavior

iG.com.br uses bounce patterns and recipient feedback to assess sender trustworthiness. Sending to addresses that consistently fail — whether due to typos, closed accounts, or role-based names — is flagged as problematic behavior, even if the message itself is relevant.

SMTP-level bounce reports, especially permanent ones (like 550 or 551), are monitored by their mail systems. Once a threshold is crossed, your sending IP or domain may be throttled or blocked entirely. This isn’t about content — it’s about how reliably you send.

Verification is the only reliable defense

Let’s be honest: no list stays clean forever. Subscriptions expire, accounts get deleted, and domains change. Without verification, you’re sending blind — and iG.com.br will penalize you for every bounce.

Real-time email verification tools like MailTester’s API or bulk checker can flag invalid, catch-all, or disposable emails before you send. This directly reduces bounce rates and protects your sender reputation — the single most important factor in inbox placement.

For marketers who use tools like HubSpot, Mailchimp, or Klaviyo, integrating verification early in the workflow means only verified addresses enter your campaigns. This reduces the risk of being marked as spam or blocked outright.

Consider this: studies from industry sources like Return Path and MxToolbox show that poor list hygiene is one of the top drivers of deliverability issues — not content, not design.

Your goal isn’t just to deliver messages. It’s to deliver them consistently. That starts with verifying every address before sending.

Verify your entire list in minutes with MailTester’s bulk tool — no expiration on credits, and results you can trust.

Final step: test your deliverability to iG.com.br before launch

Before you send to iG.com.br, verify your message reaches real inboxes—not spam folders or blocked queues. Use MailTester’s inbox-placement tests to simulate delivery for actual Brazilian recipients.

What to check

  • Does your email arrive in the inbox? Not just “delivered,” but actually visible to the recipient.
  • Is it flagged as spam by iG’s filters? Even valid emails can be blocked based on reputation or content.
  • Are you compliant with iG’s filtering rules? These can change without notice, especially for high-volume senders.

Retest before major campaigns. A single inbox-placement failure can hurt deliverability across the entire domain. Consistent validation ensures you stay on the right side of iG’s systems.

Sources

Keep reading

Ready to put this into practice? MailTester verifies emails with 98.9% accuracy — start with 100 free verifications.

Frequently asked questions

Why do my emails to iG.com.br addresses keep bouncing?

High bounce rates often stem from invalid, role-based, disposable, or purged iG.com.br addresses in your list. Cleaning your list with verification tools reduces these failures.

Are role accounts like [email protected] deliverable?

Many role accounts return as catch-alls. They may receive mail but are not reliable for engagement. Exclude them from marketing lists.

How do account purges at iG.com.br affect my sender reputation?

Sending to purged accounts creates hard bounces, which harm sender reputation. Over time, this lowers inbox placement for all Brazilian domains.

Can MailTester verify iG.com.br email addresses accurately?

Yes. MailTester’s 98.9% accuracy identifies valid, invalid, catch-all, and risky iG.com.br addresses with real-time and bulk verification.

What’s the best way to remove invalid iG.com.br addresses?

Use an email verification SaaS like MailTester to flag and remove invalid, catch-all, and role-based iG.com.br emails from your list.

Do I need to warm up my domain when sending to Brazil?

Yes. If sending large volumes to Brazilian domains, warm up your domain and IP gradually to build trust with iG.com.br and other providers.

How often should I clean my Brazilian email list?

Clean your list quarterly, or use real-time verification at signup to prevent invalid addresses like iG.com.br from entering your database.

What does 'risky' mean in MailTester's verification results?

A 'risky' verdict indicates the address may be valid but is associated with spam traps, known abuse patterns, or high bounce rates.

Can I test deliverability to iG.com.br domains without sending real emails?

Yes. MailTester’s inbox-placement tests simulate delivery to real inboxes without sending live messages to verify inbox placement outcomes.

Are disposable domains allowed on iG.com.br?

No. Disposable domains are frequently blocked by iG’s systems. Verify and filter them early using a reliable email verification tool.

How does MailTester help with international deliverability beyond Brazil?

Its verification logic and inbox placement tests support global domains, not just iG.com.br, helping maintain consistency across markets.

What happens if I ignore bouncing iG.com.br addresses?

Continued sending to invalid or purged iG.com.br addresses increases your bounce rate, which can trigger spam filters and degrade overall deliverability.